Nonslip joint split ring union device



Oct. 29, 1946.`

J. R. GuiLDFoRD NONSLIP JOINT SPLIT RING UNION DEVIC Filed March 2o, 1944 NGA.

FIG?.

.FIC-3.6.

muuu" Patented Oct. 29, 1946 UNITED STATES PATENT OFFICE NON SLIP JOINT SPLIT RING UNION DEVICE Joseph R. Guildford, Bualo, N. Y. Application March 20, 1944, Serial N o. 527,169

6` Claims. j 1

This invention relates to a device for use in slip joint union connections and has for its primary object to provide means to lock such connections together to prevent them from pulling apart regardless of internal pressures or vibration.

`An object of this invention is to provide means for making non-slip joints in union connections without the need `of anchoring the plain -unthreaded tubing or threaded fitting to which the unthreaded tubing is to be connected.

y Another object of this invention is to provide means of making tight non-slip joints between plain unthreaded valves, fittings or the like, thereby eliminating the possibility of such joints from slipping apart dueto expansion and contraction.

, This invention may be used for making nonslip joints between plain unthreaded tubing manufactured from all types of metals or plastics yand threaded fittings, valves, pipe or the like.

Other objects and advantages of the invention will be apparentrfrom the following description and accompanying drawing wherein Figure 1 is a plan View of the split ring when compressed into non-slip position.

Figure 2 is a vertical elevation of Figure 1 on line 2 2.

Figure 3 is a vertical elevation of the split ring in open position.

' Figure 4 is a vertical sectional elevation of Figure 2 on line 4 4.

Figure 5 is a vertical Figure 3 on line 5 5.

Figure 6 is a vertical sectional elevation of a union connection with an Iannular compressible packing and friction ring showing the split ring in open position before being compressed.

Figure 7 is a vertical sectional elevation of a union connection with an annular compressible packing and friction ring showing the split ring in compressed position wherein the tooth of the split ring is shown forced into the wall of and gripping the tubing.

Figure 8 is a vertical sectional elevation of a tube connector union device showing two split rings in compressed position gripping the tubing with the tooth portion of each ring.

Figure 9 is a cross-sectional view of Figure 8 on lines 9 9.

Referring to the drawing:

The numeral I0 represents a ring split in part axially to provide abutting split portions II and I2. A tooth I3 is provided integrally on the split portion I2 extending within the inner cirsectional elevation of tubing and .threaded pipe,`

cumference of the ring l0. The inner side of the split portion II is formed at an angle a few degrees off of vertical at I4. The outer side of the split portion I2 is formed at an angle at I5 parallel to the abutting angle at I4 providing inter. split portions I Il engaging surfaces between the and I2.

The numeral I6 indicates a cutaway sectional portion of a male threaded fitting, valve, pipe, or the like, to which plain unthreaded tubing `I1 is .to be connected. The interior portion of I6 is vided. This iiange 22 is adapted at 23 to slidably.

fit the tubing I1. `The numeral 24 designates an ordinary annular friction ring and 25 designates a compressible annular packing.

The inner circumference of the ring I0 is adapted to fit the exterior circumference of the tubing l1. The outer circumference of `the ring I0 is adapted to i-lt within the inner circumference of the nut 20.

The angular cuneated portions I4 and |15 of the split ring I0 are provided so that when the ring IU is compressed into the position shown in Figure '7 the tooth I3 is projected into the wall of the tubing I1 thereby gripping the tubing in such manner as to prevent the tubing from slipping in any direction.

In Figure 6 it will be noted that :the split ring I0 in section is shown open wherein the top of the tooth I3 and top of the split ring portion I2 abuts the friction ring 24. As the nut 20 is screwed onto the .threaded fitting I 6 the split ring portion II of the ring I0 is forced toward the split ring portion I2. As the portion l I lwith its angular cuneal portion I4 continues to be forced onto the angular cuneal portion I5 of I2 .the tooth` I3starts tobite into :the exterior wall of the tubing I1. When the split ring I0 has become completely compressed shut and the tooth I3 has entered the outer portion of the wall of the tubing Il the packing 25 is compressed making a tight leakless joint.

The numeral 26 comprises a nipple or sleeve in which the interior wall 21 is adapted to slidably t the tubing I'l. The ends of the nipple 26 are provided with male threads 28.

The method of compressing the split rings I0 f against the ends of the nipple 25 are the same as described above.

In Figure 8 friction rings 24 and packings 25 are not shown or required as the illustration is intended to show how plain tubing such as electrical conduit or the like may be connected and held rigidly in place Without the danger of being pulled apart.

It will be obvious that when the split ring is compressed in a union connection and the tooth of the split ring has simultaneously bitten into the tubing Wall it would be next to impossible for the tubing tov slipre'gardless of pressure or vibration With the result that a joint would be safe from rupture and possible disastrous leaks.

While I have shown and described non-slip joints in which the split ring device is compressed with threaded slip joint nuts it is to be understood that these split ring devices may be used in joints Where the said split ring may be compressed with slip flanges adapted to be tightened with bolts and nuts externally of the tubing to be connected.

It is believed that the many advantages of this invention Will be readily understood, 'and although the preferred embodiment of lsaid invention is 'as illustrated and described, it is to be understood that changes Yin the details of construction may be 'resorted 'to which Will fall Within the scope of the invention as claimed.

What is claimed is:

l 1. AV non-slip joint union device for gripping plain tubing in a union connection comprising an annular ring split in part axially and provided with a tooth for projecting into the exterior Wall of 'said-tubing said tooth 'extending 'interior'ly of the inner circumference ofsaid annular said slit portion fof the annular vring being VVprovided with cuneate'd abutting portions for slidable engagement and adapted to urge said tooth into the said tubing when said `cuneated slidable engagement portions are compressed 'together Within said union connection. p

n 2. A non-slip joint union device forv gripping plain unthreaded tubing rin a union connection having aslip joint nut said non-slip device cornpri'sing a split ring having a Agripping vportion for biting into the exterior wall ofsa'id tubing said split ring adapted interiorlyfto fit 'the "exterior of 'said tubing and adapted exteriorlyto fit Within the interior of 'said nut said gripping portion comprising Va ltooth extending inwardly of said ring said split Aportion of said ring being provided With Vaxially extending Wedge-shaped abutting portions having inter-'engaging 'surfaces for slidable engagement and adaptedto urg'esaid gripping portion to bite into the exterior vv'all of said tubing when theWedge-shaped inter-'engaging surfaces of said split ringare compressed by said slip joint nut thereby preventing said tubing from slipping outof said union connection.

3. In a slip joint union having a co'mpressible annular and compressing means for'conn'e'cting plain unthreaded tubing with threaded tubing, a non-slip device for anchoring said plain tubing `Within' said unioncomprising a 'ring split' part axially and adapted interiorly to t the exterior of said unthreaded tubing and adapted exteriorly to fit the interior of said compressing means a tooth for anchoring said unthreaded tubing said tooth extending interiorly of said ring said split'portion of the ring being provided with axially inclined abutting surfaces for slidable engagement and adapted to urge said tooth into the exterior Wall of'said unthreaded tubing as the said axially Ainclined abutting surfaces ofsaid ring are compressed together by said compression means thereby preventing said unthreaded tubing from slipping in either direction Within said threaded tubing.

4. In a slip joint union employing compression means for connecting unthreaded tubing with tubing of increased dimensions adapted interiorly to slidably receive the unthreaded tubing, a device for converting said slip joint union into a non-slip joint union comprising a ring splitin part axiallyand v.provided with a tooth said tooth projecting inwardly of said ring said device adapted to slidably nt the unthreaded tubing and slidably fit said compression means said'splitportion of the ring being provided With axially' 'inclined abutting Wedge surfaces for slidable engagement and adapted to `force Hsaid tooth in'to the Wall of said unthreaded "tubing when said slidable engagingwedge 'surfaces are compressed together by said compression means.

5. In a telescoping tubular connection provided with compression means, a non-slip device 'to prevent telescopic movement of saidtubular connection comprising a ringsplit open axially, and provided with axially 'extendinginter-engaging wedge surfaces andgripping l'means said gripping means provided integrally With and extending Within'the inner circumference of saidlring said device adapted' to slidablyiit saidtelescopic tube in split open position and grip said telescopic tube with s'aidgri'pping means when said axially extending Wedge surfaces of said ring vare compressed'together into"close.d.position by said compression means,

6. In a"t`elescoping,tubular connectionprovided with compression means, a .non-slipdev'ice .t0 prevent telescopic movement of said tubular ccnnection comprising a ring axially splitA open in part and provided with gripping meansfsaid. gripping means consisting of a toothlike[iportion4 provided integrally with and extending-.Within the inner circumference of said ririg,1y said Usplit open portion ofthe 'ring being provided with axially extending inter-engaging Wedge surfaces for slidable engagement, said `nonslipdevice adaptedto slidably fit sai'ditelescopic tube insplit open position andg'rip :said telescopic tube with said gripping'means as saidinter-engaging wedge sitionfbyfsai'd 'compression means. l

surfaces are compressed together intoclcsedpo-v JOSEPH n. .'fGUILDFo'RD. 

